【摘要】 使用５份由西班牙提供的向日葵列当国际鉴别寄主，通过人工接种方法，对吉林省向日葵主产区３个点的向日葵列当群体进行了生理小种鉴定。结果表明．３个列当群体接种在向日葵列当国际鉴别寄主上反应完全一致，根据已知向日葵列当生理小种在鉴别寄主上的寄生性，该向日葵产区向日葵列当的生理小种定名为Ａ小种．更多还原

【Abstract】 The races of the sunflower broomrape (Orobanche cumana Wallr) populations from three locations in the principal sunflower production area in Jilin Province were identified with the artificial inoculation method by the utilization of 5 international differential hosts of the sunflower broomrape from Spain. The results showed that the three broomrape populations inoculated to the differential hosts made completely the same reaction. In line with the parasitism of the known races of the parasite on the hosts,the races of the broomrape in the area were denominated race A.更多还原